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Paper
Title

Effect of Deformation-Induced Defects on the Microstructure and Pitting Corrosion Behavior of Al-Ag Alloy

Year: 1397
COI: JR_IJE-31-12_014
Language: EnglishView: 185
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Authors

P. Afzali - Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran
M. Yousefpour - Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran
E. Borhani - Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran

Abstract:

In this study, a wide range of combined ageing treatments and cold work deformations in the Al 4.2 wt% Ag alloy matrix were proposed, aiming to investigate the effect of defects such as precipitates (Ag2Al plates) and dislocations on the mechanical and electrochemical behavior of Al–4.2 wt% Ag alloys. Further reductions of thickness from 10 to 60%, decreases the mean size of Ag2Al plates, along with a denser distribution. The inductive loop at lower frequencies in Nyquist plot attributed to localized corrosion that clearly testified the fluctuations of the anodic branch in the Tafel diagram and the FE-SEM images for the presence of pitting corrosion. Additionally, the pit propagation grade expands repetitively with cold work reduction and fragmentation of pre-precipitates. This was related to an extreme amount of dislocations induced by deformation and fragmented pre-precipitates, which created more preferable locations for the nucleation of pits. Furthermore, Energy Dispersive X-ray Spectroscopy of pits, revealed that the presence of Al-Ag containing particles acted as cathodic sites and caused the anodic matrix dissolution.

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Paper COI Code

This Paper COI Code is JR_IJE-31-12_014. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/962924/

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Afzali, P. and Yousefpour, M. and Borhani, E.,1397,Effect of Deformation-Induced Defects on the Microstructure and Pitting Corrosion Behavior of Al-Ag Alloy,https://civilica.com/doc/962924

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Type of center: دانشگاه دولتی
Paper count: 9,916
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